Shoulder external rotators muscles

Authors

Affiliations

Nate Yomogida, PT, DPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, PT, DPT

Doctor of Physical Therapy

B.A. in Neuroscience

Table 1: Glenohumeral External Rotator Muscles

Muscle	Origin	Insertion	Innervation	Action
Infraspinatus	Infraspinous Fossa of Scapula	Greater tubercle of Humerus	Suprascapular n. C4 - C6	GHJ: ER, Stabilization
Posterior deltoid	Scapular spine	Deltoid tuberosity of humerus	Axillary n. C5 - C6	GHJ: Extension, ER, Abduction
Teres minor		Greater tubercle of Humerus	Axillary n. C5 - C6	GHJ: ER, Weak adduction

Citation

For attribution, please cite this work as:

Yomogida N, Kerstein C. Shoulder external rotators muscles. https://yomokerst.com/The Archive/Anatomy/Skeletal Muscles/Upper Limb Muscles/Shoulder muscle groups/shoulder_external_rotators.html